GL850GSSOP-28USB 2.0 HUB Controller

GL850G, Genesys Logic's advanced USB 2.0 hub, fully complies with the Universal Serial Bus Specification Revision 2.0. Leveraging Genesys Logic's cutting-edge, cost-efficient serial interface design, GL850G offers proven compatibility, lower power consumption, and a superior cost structure. It simplifies board-level design, helping system integrators achieve the lowest bill of materials (BOM). GL850G integrates 5V to 3.3V and 3.3V to 1.8V voltage regulators, eliminating the need for external LDOs. Its power enable pin supports both high-enable and low-enable power switches, providing flexibility in component selection. An 8-bit RISC processor manipulates control/status registers and responds to USB host requests. GL850G's firmware controls general-purpose I/O (GPIO) to access external EEPROM, responding to the host with customized PID and VID. In the absence of external EEPROM, default settings in the internal mask ROM are used. GL850G offers flexibility, with more complex settings like PID, VID, and downstream port numbers easily programmable via external EEPROM. Each downstream port supports two-color status LEDs for normal/abnormal status indication. GL850G supports both Individual and Gang modes (4 ports as a group) for power management. As a full-function solution, it supports Individual/Gang power management modes and two-color status LEDs. The number of downstream ports can be configured via IO settings without EEPROM. To meet cost/performance requirements, GL850G is a single TT hub solution. Genesys Logic also offers GL852 for multiple TT hub solutions targeting systems needing higher performance for full/low-speed devices.

• Meets USB 2.0 Specifications
• Flexible Downstream Port Configuration
• Upstream Port: HS & FS Traffic
• Downstream Ports: HS, FS, & LS Traffic
• Dual Pipe Endpoints: Control & Interrupt
• Backward Compatible with USB 1.1
• Integrated 8-bit Microprocessor
• RISC-like Architecture for Efficiency
• USB Optimized Instruction Set
• Performance: 6 MIPS at 12MHz
• Memory: 64-byte RAM & 2K Mask ROM
• Custom PID & VID Support via External EEPROM
• Downstream Port Configuration via External EEPROM